Take-up device for bearings



Jul '27, 1926.

G. r- BAKER TAKE-UP, DEVICE FOR BEARINGS Filed Dec. 28

IINVENTOR.

Patented July 27, 1926.

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" 'mxn-ur 'nnvron roa-nneninesiqp Application filedDeceinber 28,;,192 3.:"'Seria1 o=ies3,'1s7;-- t.

maticallyadjustable bearing for shafts, and; particularly means for adjusting the bean; ing, :.-between the, connecting" rod and the crank shaft of; an 1 internal combustion engine, s1whichr means, is, particularly simple and compact in construction, readily applied;

and highly eflicient and durable in use.

' The invention consists in the novel fea,

tures and in the combinationsand construct tions hereinafter set forth and claimed. 1'

In describing this invention reference is had to the accompanying drawings in which like charactersm designate Figure 1 is an '1nvertedrplan 'view;of a. bearing embodying my invention, zcontigu- 2 Figures 4 and 51 are respectively.

, corresponding p rts inall thelwuews. Y a

ous parts of a crankshaft-being also shown.

. Figure 2 is a'ctransverse sectional View partly in elevation taken on line2f2, Fig.1,

-. Figure 3'is anenlarged-fragmentary sec-- tional view similar'to- Fig. 2, of. a -preferred construction of the bolt and nut'with' the cams on the neck'ofi the nut.

a plan view andanedge view ofeoneof the cams.

' connecting rod 6.

7 is the babbitt bearing on the shaft 3,. and'held in position by the bearing sections This-bearing comprises a box, comprising" opposing sections, means for clamping" the andcams pivotally mounted concentric with the pins between the latter shoulders and I have here illustratedmy invention-as Q applied to a. crank shaft of an internal com- 1. bustion engine, and particularly the crank shaft ofa Ford engine.

-1 designates the crank shaft, 2 the crank thereof, 3 the crank pin. 4 and 5 are the sections of the bearing box, one of such 880-.

tions as the'section 5, being integral with the v 4 and 5, the babbitt bearing being formed as usual of two sections located respectively in the sections '4 and 5. I

As sections together, including pins extending: through the sections on opposite sides of the shaft and having shoulders engaging the outer face of one section and shoulders op posed to theouter faceof the other section,

der 9 at; oneend thrusting against one section, 1 as .5, and ashoulder 10at its other end opposite to, the outer face; of the section 4.. I

' ,zThese' 'pins 8 arezusually bolts, and the tightened; against the section 4,- andv are locked in position and-"when itis desired to tighten the bearing the "nuts are 'unlocked' and tightened, and again locked.

. Automaticmeans;.or -camshave been deinvention has for itsobject anautto- '8 are tions'4. and i5-,j;on opposite;sides of the shaft 7 or crank pin Band each ipin 'having-a shoul vised. for; automatically tightening the bearings,-'; butpmy automatic means is radically different-than thos'eheretofore devised.= I

, My means for. tighteningvthe bearings,

comprises" cams-.pivotedonthe pins or bolts '8; between the: shoulders: thereon, and one of the sections 4 aorf'5', preferably between the nuts "10 and? the; section. 4, these cams having i pivotal 1 movement 7 about, the bolts '8, and

having cam faces :1 arranged :to thrust, out-..

wardly on the nuts .10andinwardly on the section 4, duringr'such pivotal I movement.

on each boltS; 11 and 12 designate the a laterally extending arm "13, the rings or washers, each having oppositely inclined cam faces 14 and 15, which engage inclined here; shown,'there (are two cams mounted" v cams mounted on each-bolt 8.5;;1621Cl1 oam being here shown as in the form of a fiat ringor washer, having plane fashion,'complemental faces 14 and 15, on the other ring or washer. The ring 12 isarrangedwithits flat face against the or washer 11 is arranged with its fiat face against the bearing section 4 and the washer bolt 10-so that, the inclinedfaces of the cams coact inclinedplane, fashion on each other during pivotal movement of the cams] The means for automatically moving the cams on their p vots, compr1ses'spr1ngs-16, one spring 16 belngconnected to the arms 13,0f the cams 11, and the oth-er's'pring 16 connecting the arms13" to the cams 12, so that the springs tend to move the cams on their pivots to cause their inclined plane faces toride up each other, and hence,=to

cause the cams-to thrust outwardly on the bolt '10,and inwardly on the section 4, and

llO

take up any looseness developed .in I the bearing. '1 In Ford cars there isinot enough space 7 far as possible, against the tension of the to use thebolts and nuts on the crank for number 4 cylinders, as such bolts are liable to strike the oil pans or bottom of the crank case; and hence, in order to shortenthe bolt and use a nut having a sufiicient number of threads the head of the nut is made thinner and the nut formed with a neck 17 which extends through the cams, that is, cams are mounted on the neck 17, see Fig. 3.

- The earns 11 and 1 2, are preferably so arranged that in initially tightening the nuts, the lowermost cam is pulled backwardl'y as spring and held, and when the nut is tightened, it turns in such direction as to turn the other cam 12 backwardly' outwardly to its starting position against the influence of the spring 16. Such cams are readily applied to the'bearings and are not affected by the throw or centrifugal force of the crank, and

further efliciently take up the wear as it develops in the bearing.

What I claim is: 1 1. In a bearing structure the combination of a shaft, a bearing box comprising opposite sections mounted'on the shaft, a pin extending through the sections, shoulders at opposite ends of the pin, cam means pivoted on the pin between one of theshoulders and the contiguous bearing sectlon, and being arranged to push such section toward the other section and thrust the pin endwise,

' the cam means having a laterally extending arm and a spring connected to said arm tending to turn the cam.

2. In a bearing structure, the combination of a shaft, a bearing box, comprising opposite sections mounted on the shaft, pins extending through the section on opposite sides of the shaft, pairsv of camspivoted on each pin, one cam lying on the other, the cams having inclined faces on their opposthe opposite directions, a shoulder on e ch pin thrusting against one of the cams, aid cams having laterally extending arms and springs connected to said arms and tending to turn the cams.

111g sides arranged to thrust the cams in 8. A take-up bearing device, comprising a I pin for holding two bearing sections together, a shoulder on the pm, a pair of cams pivoted on the pin between the shoulder and one of the bearlng sectlons, the cams havlng opposing inclined surfaces engaged with each other and laterally ext-ending arms, and springs connected to said arms.

4. In a bearing structure, the combination of a shaft, a bearing box mounted on the shaft, comprising opposing sections, bolts extending through the sections on opposite sides of the shaft, nutsthreading on the bolts, a pair of pivoted cams mounted concentric with each bolt between the nut and the contiguous bearing section, said cams having coacting inclined'fa ceson their opposing sides, and having arms extending laterally in opposite directions, the inclined GEORGE E. BAKER. 

